- Made of Buna-nitrile (also called Buna-N) for use with a variety of fluids from petroleum to aliphatic hydrocarbons and has a durometer (hardness) of 70A for resistance to penetration
- Includes 382 pieces for covering 30 dash sizes
- For use across a wide temperature range from -30 degrees F/-34 degrees C to 250 degrees F/121 degrees C
- Meets Aerospace Standard AS568A for quality assurance
- Plastic case for portability and organized storage
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Buna-N O-Ring Kit, 70A Durometer, 382 Pieces, 30 Sizes
|Price:||$22.12 ($0.06 / O-Rings) & FREE Shipping on orders over $35. Details|
Specifications for this item
|Brand Name||Small Parts|
|Material Type||Nitrile Rubber|
|System of Measurement||Inch|
|Cross Section Shape||Round|
|LowerTemperature Range||-30 Degrees Fahrenheit|
|Upper Temperature Range||250 Degrees Fahrenheit|
|Number of Items||382|
This O-Ring set is made of Black Buna-N, has a durometer of 70A, and includes 382 pieces cover... See more product details
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This O-Ring set is made of Black Buna-N, has a durometer of 70A, and includes 382 pieces covering 30 dash sizes. The rings have a Round cross-section and can be used across a wide temperature range from -40 degrees F (-40 degrees C) to 212 degrees F (100 degrees C). The rings come in a plastic storage case designed for organization and portability. Designed for use in a variety of sealing applications, this Buna-N O-Ring set meets standards defined by Aerospace Standard AS568A for quality assurance.
The set includes the following O-Rings: 20 pieces each for dash sizes 006, 007, 008, 009, 010, 011, and 012; 13 pieces each for dash sizes 110, 111, 112, 113, 114, 115, and 116; 10 pieces each for dash sizes 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, and 222; 7 pieces each for dash sizes 325, 326, and 327.
Buna-nitrile can have high tensile strength, as well as abrasion, tear, and compression set resistance. It is compatible for use with petroleum, hexafluoroacetone (HFA), hexafluoro-2-butyne (HFB) and hydrofluorocarbon (HFC) fluids, vegetable oil, alcohol, acids, and aliphatic hydrocarbons. Buna-nitrile is vulnerable to acetone, ethers, esters, ozone, sunlight and weathering, and should not be used in ozone-generating electric motors, welding equipment, or in applications with exposure to UV light.
The durometer hardness of this Buna-N O-Ring is 70A. Durometers measure the hardness of a material and its resistance to permanent indentation. A higher durometer value indicates greater resistance to indentation. On a scale of 0 to 100, a value of 0 indicates that a sample was completely penetrated, while a value of 100 shows no indentation in the sample. The letter following the number identifies the shore scale, which is either shore A or D. Shore A is used for rubber, while shore D is used for harder plastics.
O-rings provide a pressure and fluid seal between cylindrically shaped, overlapping mating surfaces and are commonly seen in engines, faucets, flanges, valves, and various cylinders. They are circular in shape, with a round cross section, and a hole in the center, similar to a doughnut. O-rings are available in various AS568A dash sizes as well as Metric sizes. O-ring size is defined by the inside diameter (ID), outisde diameter (OD), and cross-sectional (CS) diameter.
What's in the box?
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Top Customer Reviews
Anyway, I ended up using the o-ring anyway, because I didn't have the time to be looking for the right one anymore, the faucet head won't go in all the way into its base, but it's not leaking anymore . Point is, I will give you the thickness of each ring provided in this kit. I used a caliper and measured each by inch fractions, if you need me to do mm or whole inches, please let me know. I will list the Dash numbers and since most are the same thickness, I will simply place a - between size ranges.
Between Dash number 325 - 327 the thickness is 13/64 of an inch.
Between Dash number 210 - 222 the thickness is 9/64 of an inch
Between Dash number 110 - 116 the thickness is 3/32 of an inch
Between Dash number 006 - 012 the thickness is 1/16 of an inch.`
Well, that's it for the thickness. As I said, the kit is great for an assortment of diameters, but it may not be that great for those looking for thinner o-rings. I hope this helps.
Note: the Amazon price is okay, but this same kit is usually available at the local HF store for one-third the price.
And, by the way, one of the o rings fits DELTA single handle faucets also.
A nice selection of sizes and quantity. For under $10.00, well worth having sit on the garage shelf !
Update: I have needed o rings from this box three times already, and my neighbor is dipping in to the supply also; lots to go around.
already came in very handy in shop fixing and tuning my airguns
Must have, great Quality! My only complaint is that the o-rings get lose in the case and some are difficult to differentiate, other than that great product.
Most Recent Customer Reviews
You gotta have one of these in the toolbox. Good quality and always there when you need an o-ring.Published 1 month ago by Aubrey Laughlin
Very nice selection of o-rings. The case is nice as well. I have used several of them so far and I have no complaints.Published 2 months ago by Alan
Got on time. As described. Works great. What else can ya say about o-rings? Rebuilding hydraulic controls on my tractor.Published 3 months ago by J. Rosa
Missing the sleeve of R-06 O-rings,
Would be nice to have a complets set!